Color

#661aea

#661aea
hex#661aea
rgbrgb(102, 26, 234)
hslhsl(262, 83%, 51%)
oklchoklch(0.491 0.267 287.9)
Closest name: Electric Indigo (#6600ff)Relative luminance 0.095

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#9eea1a

#1a36ea · #ce1aea

#ea661a · #1aea66

Split-complementary

Open in tool →

#eace1a · #36ea1a

#ea1a36 · #9eea1a · #1aeace

Contrast

#661aea as textRatioAAAA largeAAAFix
Aaon white
7.24:1passpasspassPasses AAA — no fix needed.
Aaon black
2.9:1failfailfail
  • AA: use #8c52ef as the text (4.57:1)
  • AAA: use #ab81f3 as the text (7.17:1)
  • AA: or shift the background to #cccccc (4.51:1)
  • AAA: or shift the background to #fcfcfc (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #661aea as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#661aea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #661aea
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #661aea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/661aea-af9cc4-dfce4e-2a1f2d-e9eaf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md